Description
Penn plax’s, pro-z laboratory-quality ammonia-removing zeolite crystals. Zeolite crystals are designed to keep your fresh water aquarium clear for up to 4-6 weeks Zeolite crystals are designed to keep your fresh water aquarium clear for up to 4-6 weeks Zeolite crystals are proven to remove ammonia, the #1 fish killer Pro-z laboratory-quality ammonia-removing zeolite crystals are fast acting and long lasting
